Hi everyone, I have a 93 coupe I purchase from the CHP, lately I have not been able to enjoy the car due to a foul smell emanating from the engine bay. Said smell is a combination of gas fumes with exhaust gases, after driving for 10-15 minutes the smell gives me headaches and dizziness; my mechanic could not find anything lose or breaks that could be leaking out. The car is been seating in my driveway for 3 months or so and I just started the engine and it sounded bad as if the catalytic...

1993 Coupe with foul smell